Workholding clamp



Jan. 12, 1932. H, w. MASS, 1,841,196

WORKHQLDINCT cum Filed May 25 1929' INVENTOR Hwy 14/ /'7a,6\s

BY 11 7M 11.13 ATTORNEY Patented Jan. 12, 1932 UEED STATES HENRY w. MASS, or nocnnsrnn, new Yonx-assrenon rofinntrrokrxnfoon "lama-Q CHINE 00., A PARTNERSHIP coMPosEn on HENRY W. ivmssfAnnwrnson-wm TALLMAN, BOTH OF ROCHESTER, NEW YORK .1

woaKHoLDING ona ur Q Application filed May 25, 1929. swa m; 566,044.

' The present invention relates to work holding clamps and more particularly to the type for accurately positioning work pieces in metal working machines such as drill presses,

planers, grinders, lathes etc.

An object of this invention is to provide a construction which is adapted to hold effectively work pieces of various sizes and shapes with reference to a plurality of planes at angles to each other.

To this and other ends, the invention consists of certain parts and combinations of parts all of which will be hereinafter described; the novel features being polnted out in the appended claim. p

In the drawings:

Fig. 1 is a face'view of a clamp constructed in accordance with this invention.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a detail View showing a slide adapted for use with work that cannot be held by the slides shown in Figs. 1 and 2; and

Fig. 4.- is a detail view of the slide shown in Fig. 3.

In the illustrated embodiment of the 1nvention there is employed a frame or block made of steel, and having two angularly arranged intermediate portions 1 and end portions 2 projecting beyond the intermediate portions to provide flanges 3 which serve to provide portions through wh 1ch the body may be clamped in positlon on the metal working machine. The faces 4 of the end chine. The angularly arranged portions 1 are each provided with a plane face 5 which is perpendicular to the faces 4 and extends between them, each face 5 forming at anangle preferably at a right angle to the other face 5. A work piece 6 positloned against the two faces 5 will be perpendicular to the faces 4.

VVitlrthe end in view of firmly holding work pieces of diiferent shapes and sizes in firm engagement with both faces 5, clamping means of novel construction is provided- In this instance, each portion 1 is provided ings.

portions are plane faces and are parallel so with a'plurality of" openings passing there-e through and'h'aving guide walls 7 which are perpendicular to-the face 5 er such'jportion.

In this instance, fourguides are provided in each POItlOIi 1 arranged in the form of a square. For operating on these guides slides" 8 are'provided which are so formed that they conform generally to the shape of the guide openings in cross section and are non-circular so that they cannot turn in said guide open- This arrangement permits each guide to move freely in a line perpendicularly to one face 5 and parallel with the other face 5. Each slide 8 carries a clamping device which in this instance, is in the form of a clamping screw 9 passed through the slide transversely and at right angles to the line of movement of the slide so as to hold the work piece against that face 5 which is parallel to the line of movement of the slide by which the screw is carried. The guide on which a slide is arranged depends on the size of the work plece. positioned on any one of four guides each positioned at different points with reference to the plane face against which the work is clamped by the clamping device. For narrow work pieces the guides nearest the junction between the two faces are employed, whereas, for wider pieces the guides farther from the junction are employed. For short pieces the guides nearer the upper end of the frame or block are employed whereas for longer pieces the guides nearer the bottom of the block are employed, the workman selecting the'guides best adapted for the work pieces. The slides are freely movable on the guides to position the clamping devices at the best points for engaging the work, and the clamping of the work by the clamping Each slide, in this instance, may be devices acts to'bind theslides on their guides against freedom of movement.

In Fig. 3 the slide is designed for work pieces 6 which are required to be engaged at points betweenv the guides. In this form of the guides two extensions 10 and 11 of different lengths are projected from opposite sides of the slide 8 and carry the screw clamping devices 9. Either one or both of these clamping devices may be employed for engaging the workpiece.

What I claim as my invention'and desire to secure by Letters Patent is: V

As anew article, of manufacture,v a work holder consisting ofaa;meta1 block comprise ing two'like members disposed at a right angle to each other and having outwardly disposed flanges fitlOPPOSltG" ends: and: pro: vided with a plurality. ofinpe'nings. extending therethrough, the flanges providing means for clamping the holder to a machine, a slide selectively engageable with an opening of each of the members and. .freely. slidable therein and of noncircular' outline in cross a section to prevent turning, andtapserewe at the, inner end of eacheoftthe slides-,thesiarews coactingto clamp :the work; inythe; angle against the, faces at [the holder and-1 at -the same. time secure the slides in therequired. adjusted :position.

- LHENRRYWVJVMASS. 

